Abstract: An example system to retrieve medical exams stored at a plurality of nodes includes a request receiver to receive a request for a plurality of medical exams via a first node of the plurality of nodes. Each node of the plurality of nodes is associated with a respective facility providing the medical exams. A load balancer is to determine a load generated on the first node based on the request and weigh the load on the first node relative to a load on at least a second node of the plurality of nodes. A path selector is to select a node of the plurality of nodes to process the request based on the weighted loads. Upon selection of the node, a query tool is to query the selected node and the plurality of nodes for the medical exams and deliver the medical exams to a user via the first node.